Interior grinding device.



Patented 009291909.

Ilil

r edge around thejdoor-opening,

UNITED Asiiuiriis- :roHN R. KELLER, or cINcINNA'rI,

omo, AssIGNoR To vic'roia oF cINcINNA'rI, oiiIo, A conrone'iioiv(ir-ortie.v

L' INTERIOR cnsIN'nING DEVICE'.

To all 'whom it may concern."

Be it known that I, JOHN R. KELLER, a.

attention b'eing called to the accompanying drawing, with ithe referencecharacters ,marked thereon, which of this specification.v This inventionrelates to a grinding device constructed to permit itsuse under certainconditions lwhen other means or devices cannot be readily applied.'

The device is more particularly designed for use on interior surfaces ofsafe-bodies and on the underside of partsv thereof which are not readilyaccessible to permit use of other tools, and wherel operation bygrinding is alsopreferable by reason of the character of the bedone.

vThe inventionis described and illustrated in connection withacast-metal safe-body,-

on the inside of vwhich certain work hasl to be done, as for instancefinishing'of'the inner cutting of key-ways, cleaning out of' recessesintended to receive the locking-bolts etc.

'In the following specification an ularly` ointed out in the claims atthereo will be found a full description of my' invention, together withitsl operation, parts and construction, which latter is also illustratedin the accompanying drawing, in which:- ,f j A Figure 1, shows my devicein side-eleva-l tion and in position on a safe-body on which it is usedtol grind out recesses which are provided therein, to receivethe ends oflockingbolts 'carried by the door' for this body and serving to hold itin closed position. The safe-body as .much oflit as is shown, appears invertical crosssection, the line of section passing through lthe .openingtherein which is provided to receive 'the door above re ferred to.4 Fi2, shows that part of the wall of the sabody, illustrated in Fig. 1,

't which'contains the doorlopening. It also .shows in top-view the lowerpart of` my grindin -device which is used inside 'of this safe-bo y,the, device being. substantially V specification o f Letters Patent.Apitation mea Aprii Ii, 1909. serial No.'

yforms also d a part metal and the kind of work to into the solid metal.partic-l lusea grinding-wheel 8, which may be a custhe endshown on a'horizontal section taken'on line Patented ,l

2 2 of Fig. l, a portion' of thesafefwallf i at the edge of thedoor-opening'being broken out to uncover lthat part of thegrindingdevice otherwise hidden thereby. A Fig'.- 3,

7shows in a lsimilar view, and at reduced scale, theV largerl partfof"the safe as it ap-:

.pears above, with my grinding-device superposed in .positionv andshown-'iii top-view. l;4`1g.4,-is an end-view ofthe device, showing Iits right end as it appears in Fig. 1. 5, isa transverse'section Online5%-5' of Fig.v 2. Fig. 6, is a vertical section on line 61-6 of Fig. 1,lookingtoward the left, observe this g linealso-in Fig. 2.

A indicates the front-walLnf a safe-body which may bean. integralcasting, and i is y, the door-opening therein; The door fitted tov thisopening, .to close the same is not shown. Bolts are carried by suchV adoor to hold the same inclosed position, the ends' of4 lsaid boltsbeingi'eceived in. recesses b, provided on the inner side B of thefront-wall. These recesses openl into the door-opening, sothat thebolts-ca-rried'on the side of .the

door, whenmoving outwardly therefrom,

mayenter these recesses. ,These-latter may" be cored out in theproughcasting, iii-which case they are merely cleaned out and n'ished toproper dimensions, or they may be cut To do either work I tomaremery-wheel' and is mounted upon Aa sha .\9., 11 isa belt-pulleymountedLalso l upon thisshaft, and 12 is a belt-whereby 1 this pulley isdriven. The bearings for shaft 9 areprovided on a slide 13 -whichis' 16pivoted to the carriage and engaging the., i

slide is providedfor this movement. Sufficient of the upper part ofthecarriage is A removed, if necessary, to clear'the pulley during thislateral adjustment, the saine being done with *reference to the slide toclear .the belt, all as best shown in Fig. 6.-

Projections to'form stops which limitv the inovel'iientfof theslide onthe carriage-are provided, there being two of them onone andene, whichco-acts with them, -o'ii the'l other, they preventing also thebeltfpulley the recess in thecarriage in which the pulley y lAdoor-opening uppermost. The

-bridges'this opening, restin upen f Carriage fr0-'rn j rubbing againstthe opposite ends f of rotates: Two ins 17,' are 'shown-for such purposeon sli e 13, which co-act with. anjother pin,18 on carriage 14 .for thispurpose.

projecting'from a hanger 21 which depends from the `underside lof abedlate 22 which serves to su port the device in position on the safe,this latter being so placed vat the time and as shown in Fig. 3, as tobring its bed plate tlie wall e -which and on opposite portions o litsed e grindsurrounds the door-opening, While t ing-device proper dependsinto this opening.

Arm-19 is vertically adjustable, to'bperlnit the .grinding-wheel to be`adjusted to the proper'positionwithreference to the inner side B 'ofwall A, under which it has to move, and also with referencev to thedepth of recesses b which are to be lout tliereinto. For such purposearm 19 is provided with or forms part of a slide 2 3 which .-is fittedto hanger 21, both being provided with coinplementary guide-ways 24, forthe purposeY Av brace which serves'to steady arm 19 near its free end,by connecting it' totlie bed-v plate, serves also as a meansl to'movethe same for this adjustment. For such purpose this brace consists of arod l25 andof mitslrod 25fat lower end to turn freely -a'stiriup 26, theformer :at its'upper end connected to the underside of the bed-plate andthe latter to arm 19, `They are also connected to eachother in a` manner'which perin the stirrup. Its upper end is screwthreaded and -tappedinto vthe bed-plate :from below: A'knob 27 is provided on it ytofacilitate such turning? Ifthis is done,-

f the upper end ofthe rod screws in or out of the bed-plate accordingtothe direction ,of its rotation,l and accordingly raises or lowers arm19 whichA carries the' grinding-v `wheel. After the position oftheindingwheel has thus been adjusted verticallly7 by l y to these means,itris also adjusted late ra the-proper position b means. of manipula- 5'tion of handle 16, t e grinding-Wheel by o means of its, slide beingshifted on the `car ria e. .The grinding-wheel is no w Vready to e fedforward"`into the work, that is to i lcut into' the underside of. wallA, this movement being one lengthwise with reference-to.

the recess to be formed, see arrow in Fig. 2. For` `suchpurpose-carriage 14 with slide 13, which carries the grinding-wheel, isfitted to arm 19 in a mannerfto permit such movement. 'It is donehere byproviding a guide- .way 28 in arm 19 to which a projecting part 29 onthe underside ovf carriage 14 is fit-ted asbest-'shown in Fi 62 Suitablemeans are .provided accessi le for v'manipulation l from' above/wherebythe carriage maybe moved accordingly.v They consist of 'twoofbevelewheels 33'.` f The lower shaft 31 su ported on arm 19, so as tomove wit it, a caring-34 being provided for it near its 14' is supportedby an arm 19,

v-11 assumes when t vicel ina tilted connected for simultaneous-rotation by a set Its other end is screw.- ped into projection 29;'onthe carriage, thisA projec-tv gear-connected en threadedrand ta theunderside o tion forming a nutfor other shaft 32 is' arranged to extendupwardly through'l the bed-plate and is provided at `its upper end witha suitablehandle or'hand-wheel 35 for its rotation. vIt may find an u.

closely tte thereto, or an independent bearvlower end finds a bearinginthe gear-wheel carri d on it, which gear-'wheel is sup orted ineabearing 37. This bearing is attac ed t0 slide 23 of arm 19, so thatduring the vertical pier bearing inl the bed-plate, if be provided asshown vat 36. ItS- fmfgaiafiy disposesiilfs 31,' 32, perady'eiy thepurpose. The

adjustment of this arni, the gear-Wheels remain in mesh.

Pulley 11 'on the grinding-shaft is driven, by another pulley 38 on aline' or counter-shaft, or driven by the shaft of an electrical motor.-A preferable. arrangement is shown in which a motor 39 is supported onbed-plate 2 2. A saddle 4(1 is interposed to which the motor housin istted/ and connected. In lorder to inter ere as little as possible withthe observation of the work andwith access to handle 16,;it ispreferable to vmount this motor lengthwise with referencetothe.bed-plate as shown in" Fi .'3. This necessitates the use of uidepuleys 42 -to pro erly direct fL,12, stretched between pu leys 11 and 3 8.These "guide-pulleys are yieldingly supported so as tomaintain a properbelt-tension during the various changes in position whichbelt-pulley e.position of the grinding-wheel is adjusted. Av preferable way is shownby providing the bearings 43 for Athese .guide-pulleys with Shanks 44yieldingly held 45 sleeved upon these 110 i in position by springsShanks. .o

'lIo permit the device-t6 pass through-the door-opening of the safe, -'tis'preferable Vto run the grinding-wheel and its carriage as, far towardthe hanger as possible. The de.

positionand with the end' offarmfl'in advance is` passed 'in aroundthe.inner ed egoflthe safe-wall', and underz the vSame-. er 'this edeedis,passed, the devicejis righted andfthe -plate'is positioned upon ythewall which surrounds the .door-opening,- as shown. Fig'. 3,'-thesafe-rbody being accordingly suppgrted-,to bring' its doorning u pel-most, pThe grmding-w "eel is. adjusted vertically accordingto the -depth ofrecess-b, to be out` by manipulation -of knob 27 It is adjustedlaterally to suitthe width of the recess by 'means of'handle v16. The'feedmotion forward and lreturn .is obtained by manipulat-l which may bemounted/ ing handle 35. After a recess is cut, the device is shiftedaround on the safe-wall to proper position for cutting another recess.

When the driving-pulley 38 is mounted on a shaft which is xedly located,shifting 'of the safe-body, to meet these 4various positions, wouldbecome necessary.`

After all the recesses have been cut on the underside of wall A, thedevice is withdrawn in a similar manner and is ready to be ap plied toanother safe. A

Having described my invention, claim as new:

1. In a grinding-device,4 the combination of a hanger, an.' armprojecting therefrom, a grinding-wheel, a shaft on lwhich the same ismounted, means'at the freelend of the arm whereby the shaft issupportedin a manner permitting'adjustment of it in the direction of itsaxis and at right angles thereto, manip.

' -ulating devices to move these meansand ing also provided with aslide,a. hanger to which this slide is-itted and wherebythe arm is adjustablyconnected to said hanger,

-a bed-plate from which the hanger depends and means above the bed-plateto actuate the grinding-wheel.

3. In a grinding-device, the combination of a bed-plate, a hangerdepending Athere-V fr0m,'an arm movably .secured at one. of its ends tothis hanger, a grinding-wheel, an adjustable support provided for it atthe other end of the arm, operatively connected, angularly arrangedshafts, one of which connects also to the grinding-wheelsupport andmeans accessible above the bed-plate to mani ulate these vshafts formovmg the l grin ing-wheeLsupport.

4.*In a grinding-device, the combination of a frame comprising abed-plate, a hanger depending therefrom land an arm carried by thishanger, an adjustable grinding-wheel supported on this arm, a shaftforit, a pulley on this shaft, a motor supported on the bedplate, apulley driven by it, la belt'connecting 'it with the other pulley andguidepulleys for the belt yieldingly' supported on the frame.

In testimony whereof, hereunto afx my signature in the presence of twowitnesses.

JOHN R. KELLER;

' Witnesses:

G. A. HAT'rERSLEY, C. SPENGELJ

